Valencia's regional leader has faced criticism for taking around 12 hours to respond to a red weather warning by Spain's national meteorological office (Aemet) on 29 October and issue an alert directly to people’s phones, by which time the flood was already causing enormous damage.
However, the national leader of the PP, Alberto Núñez Feijóo, questioned the information provided by the Aemet, which is supervised by the central government. He also complained that the prime minister's administration had not co-ordinated with the regional government.
In the days since, pressure has mounted on Mazón, with many commentators and political adversaries calling on him to resign for his actions on that day, as well as for eliminating the Valencia Emergency Unit (UVE) on taking office last year.
In response, he has taken a more confrontational approach, in line with that of his party boss.
That has included blaming the CHJ hydrographic agency, which is controlled by Madrid, for allegedly activating and then de-activating an alert on the day in question.
“If the CHJ had re-activated the hydrological alert, the alarm message would have been sent immediately” by the regional government, Mazón said.
The CHJ has responded by explaining that it provides data on rainfall and related matters but that it does not issue alerts of this kind.
Fifteen thousands troops, civil guards and police have now arrived in the Valencia region, double the number from last weekend.